﻿// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using ICSharpCode.NRefactory.CSharp;
using ICSharpCode.NRefactory.Editor;
using ICSharpCode.NRefactory.TypeSystem;
using ICSharpCode.SharpDevelop.Editor;

namespace CSharpBinding.FormattingStrategy
{
	internal class CSharpFormatterHelper
	{
		/// <summary>
		/// Formats the specified part of the document.
		/// </summary>
		public static void Format(ITextEditor editor, int offset, int length, CSharpFormattingOptionsContainer optionsContainer)
		{
			SyntaxTree syntaxTree = SyntaxTree.Parse(editor.Document);
			if (syntaxTree.Errors.Count > 0) {
				// Don't format files containing syntax errors!
				return;
			}
			
			TextEditorOptions editorOptions = editor.ToEditorOptions();
			optionsContainer.CustomizeEditorOptions(editorOptions);
			var formatter = new CSharpFormatter(optionsContainer.GetEffectiveOptions(), editorOptions);
			formatter.AddFormattingRegion(new DomRegion(editor.Document.GetLocation(offset), editor.Document.GetLocation(offset + length)));
			var changes = formatter.AnalyzeFormatting(editor.Document, syntaxTree);
			changes.ApplyChanges(offset, length);
		}
	}
}
